XFX Radeon RX 6600 XT Merc 308 Preview

Introduction and Technical Specifications

XFX Radeon RX 6600 XT Merc 308


The popularity of cards designed for 1080P gaming cannot be overstated. It is easy to believe from Youtubers or people who shout loudly on forums that only the Ultrawide Master Race is the way to game and any other option went out with flares and deely-boppers. Heck manufacturers encourage this too, because the higher your resolution the more hardware you require to power it, and so the more money everyone makes.

If you've ever spent any time checking out the Steam Hardware Survey - and you should - then you'll understand how flawed that viewpoint is. For example, a quad core CPU is used by 38.5% of people, with GPUs which we would consider to be for the enthusiast starting out at 0.8% of people with the RTX 3080. Everything above that is below the RX 580 or RTX 2060 range, with the GTX 1060 and GTX 1050 Ti accounting for 15% of cards.

Resolutions are even more one sided. 67% of people game at 1080P, 8% @ 1440P and 2% @ 4K. More people game at 1366 x 768 than any of the resolutions above 1080P. Yeah, that "4K Master Race" idea doesn't stand up to scrutiny. We're not suggesting that it isn't glorious, just that it isn't popular, and that's why AMD have aimed their latest RDNA 2 card squarely at the 1080 crowd in the form of the RX 6600 XT.

We're bringing you our full review soon to discover how well the RX 6600 XT performs, but for now let's preview one of the best looking cards around, the XFX MERC range. Here in MERC 308 format.

Technical Specifications

Comparing the older RX 5600 XT and the new RX 6600 XT you can see what great strides the RDNA 2 architecture has made over its first RDNA stablemate. This is something we saw clearly in our testing of the 6000 series of Radeon cards. XFX are remaining tight lipped about the clock speeds although we know that the MERC 308 and XFXs other main RX 6600 XT the QICK 308 both have the same overclocked GPU speed. Indeed it might be interesting to note that a less flashy edition of the MERC 308 is available in the form of the QICK 308, which has the same underpinnings just without the curvy silverness that is part of the XFX MERC aesthetic.

 Radeon RX 6600 XTRadeon RX 5600 XT
ArchitectureRDNA 2RDNA
Manufacturing Process7nm7nm
Transistor Count11.1 billion10.3 billion
Die Size237 mm2251 mm2
Compute Units3236
Ray Accelerators320
Stream Processors20482304
GPU Clock2359 MHz1375 MHz
Boost Clock2589 MHz1560 MHz
Single Precision Peak Performance10.6 TFLOPS7.19 TFLOPS
Half Precision Peak Performance21.21 TFLOPS14.4 TFLOPS
Peak Texture Fill-rate331.4 GT/s224.6 GT/s
Peak Pixel Fill-rate165.7 GP/s99.8 GPs
Infinity Cache32 MB0
Memory Bandwidth256 GB/s288 GB/s
Memory Interface128-bit192-bit
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